Electrical attachment-plug.



G. C. MARX.

ELECTRICAL ATTACHMENT PLUG.

APPLICATION FILED SBPT.28. 1906.

1,000, 1 01 y Patented Aug.8,1911.

W/T/-VESSES r v v Vl/E/VOH ATTORNEY which clu'de foreign'matter UNITED STATES PATENT 'FFICE.

GUSTAVE C. MARX, 0F ELIZABETH, NEW JERSEY, ASSIGNOR TO DIEHL MANUFAC- TURING COMPANY, A CORPORATION OF NEW JERSEY.

ELECTRICAL ATTACHMENT-PLUG.

Specification of Letters Patent.

Patented Aug. 8, 1911.

In accordance .with the present invention the block of insulating material are molded with soc ets and apertures for the metallic parts which they are designed to receive although fitted loosely thereto, are of sufficientlylarger dimension -to enable the metallic connecting members incased therein tohave a slight lateral play to enable them to laccommodate themselves to each other without straining the housing blocks, while permitting the adjacent faces of the latter to be lirmlyseated u on each other to exom'the metallic connections within the same. The metallic connecting members are preferably locked loosely in their respective housing blocks by Y means of the binding screws by which the terminal conducting wires are secured thereto. l

...The inventionlwillbe more fully understoodby'referenc to the drawings annexed, in which- Figure 1 is a longitudinal sectional elevation and Fig. 2 ani, end elevation of an attachment plug or connector embodying the present invention.; Figs. 8 and 4 are detached side elevations of the two parts of the connector. Figs and 6 are longitudinal sectional elevations 'of the two insu-lating blocks composing the housing for the connect-ing members, but with the latter removed. Figs. 7 and 8 are detached side views of the split plug and socket constituting the connecting members. Figs. 9 and` 10` are detail 'views showing modicationfs' of the fastening means by which the metallic connecting members are looselylocked within the insulating housing blocks.

The connecting members are represented in Figs. 1 to 8 inclusive as of the usual form, comprising a cylindrical plug 1, having a split inner end and a longitudinal hole 2 in its opposite end intersected by a transverse hole which is entered by a binding screw 3, the split elastic inner end of thej'g'iii'- plug 1 being fitted tothe longitudinal socket( 4 in the adjacent end of the socket member 5 having in its opposite end the longitudinal hole 6 intersecte-d by a lateral threaded hole entered by the binding screw 7, the longitudinal holes Y 2 and 6 each receiving the end of a conductor wire 8 secured therein by means of the respective binding screws.

The insulating housing blocks 9 and 10, respectively, are shown formed with substantially parallel cylindrical sockets 11 and 12, respectively, in'their adjacent portions, and with angularly disposed holes 13 and 14 arranged, respectively,- in a line with and laterally of the sockets 11 and l2, and adaptL ed to register with the intersecting holes of of the connector into operative'relation.

From the above description, it will be obl served that the insulating blocks 9 and 10 do not closely embrace the parts for which they are designed to afford protection, and are not permanently connected therewith, but serve merely as housings for the metallic connections of the conductor wire terminals, which may be readily detached therefrom by the mere removal of the binding'screws 5' and 7, thus unlocking the plugs and socketvpieces 1 andl 5 for removal of the latter. This detachable feature of the insulating block 6 enablesthem to be readily replaced, 10j@ Y in case the become accidentally chipped on otherwlse amaged when in use, without disturbing the other parts of theY connector.

while I consider it advisable, as a meer 1 o1 convenience, to provide longitudinal'holes" 1.05"

to receive the ends ofthe'conductor wires and to .lock the connecting members in place y by means of the binding screws, as repre-- sented in Fig. 1, 1t will be observed that such arrangement is not a necessary part of the improvement, as will be apparent from a reference to Figs. 9 and l0, in the former oi which the conductor wire end is represented as inserted in a transverse hole in the plug l and the binding screw as entering an intersecting threaded longitudinal hole in such part, the wire 8 in thisinstance serving to lock the plug in its socket or recess in the block 9; While in the latter figure, the intersect-ing holes for the conductor wire end and its binding screw are represented as both entering the plug `1 laterally, so as to b'oth serve in locking the plug within its insulating block 9.

While I have herein represented the connecting members as arranged in pairs in their respective insulating housing blocks, it is evident that the present improvement is equally applicable to such connectors as are designed to establish and interrupt electrical connection between the adjacent ends of a single conductor wire, the play between the insulating blocks and the respective metallic connecting members insuring a close fit of the adjacent faces of the insulating block 8 when they are placed in operative relation, while aording ready means of renewal ot' any of the component parts ofthe connector, as before described.

From the foregoing description it is evident that the present improvement is susceptible of considerable modification without affecting its essential feature, and it is therefore to be understood Athat the invention is not limited to the particular embodiments herein shown and described.

Having thus set forth the nature of the invention, what l claim herein is 1. An electrical connector composed of metallic connecting members comprising a plug and a socket closely fitted thereto, said members being formed with relatively yielding interengagng parts by`which they are frictionally secured in operative contact relation, and each being provided with angularly arranged aperturesextending inwardly from the surface, and of which the one is to afford a fastening for thev end of a conductor wire and the other to receive a locking screw therefor, and an insulating housing composed of separable sections each formed with a socket loosely embracing one of said connecting members and an intersecting aperture loosely embracing said screw by which said member islocked Within the housing section.

2. An electrical connector composed of metallic connecting members comprising a split cylindrical plug and a socket fitted thereto, each having a pair of intersecting holes, interengaging parts entering the intersecting holes of each member comprising an end of a conductor wire and a binding screw projecting laterally from the respective member and adapted to secure the said wire in place, and molded housing blocks of insulating material provided in adjacent portions with recesses loosely litted to and adapted to receive and embrace said connecting members andy providing clearance for their lateral movement therein, and also affording angularly disposed holes for the conductor wire ends and their respective binding screws,. whereby one of the interengaging parts of each pair serves to lock loosely within its respective block the connectingmember to which it is attached while the separable housing blocks are rictionally held together by said plug and socket and are adapted to be freely detached by the disconnection of said connecting members.

3. An electrical connectorI comprising a pair of separable insulating blocks each having a plurality of parallel sockets extending entirely through the same and each socket having an intersecting aperture extending thereto from the exterior of its respective block, a metallic terminal connecting member loosely embraced by each of the sockets in one of said insulating blocks and adapted to eect with a correspondingly disposed connecting member of the vother insulating block a yielding frictional engagement, and a clamp-screw entering the intersecting aperture of eachblock and tapped into its respective contact member for both securing thereto a conductor terminal wire and locking the terminal connecting member in position while permitting the latters free lateral movement in said block.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

HENRY J. LER, HENRY A. KORNEMANN. 

